Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-11-2021 and time 03:29:19 (Italy) in region 6 km NW Sellano (PG)

A magnitude ML 1.3 earthquake occured in region: 6 km NW Sellano (PG), on

  • 21-11-2021 02:29:19 (UTC)
  • 21-11-2021 03:29:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9380, 12.8860 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 6 1079 1079
Monte Cavallo MC 11 145 1224
Trevi PG 13 8469 9693
Cerreto di Spoleto PG 13 1075 10768
Preci PG 14 724 11492
Foligno PG 15 57155 68647
Campello sul Clitunno PG 16 2442 71089
Serravalle di Chienti MC 16 1070 72159
Visso MC 17 1107 73266
Valtopina PG 17 1398 74664
Pieve Torina MC 18 1458 76122
Spello PG 19 8645 84767
Vallo di Nera PG 19 364 85131
Montefalco PG 20 5679 90810

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
46 Km NE of Terni (111501 inhabitants)
74 Km W of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.3 2021-11-21
02:29:19		 42.9377 12.8858 10 2021-11-21
02:33:33		 Sala Sismica INGV-Roma 97645961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-21 02:29:19 ± 0.04
Latitude 42.9377 ± 0.0018
Longitude 12.8858 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97645961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 223
Semi-minor axis of confidence ellipse (meter) 217
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 40
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35343
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 40
Type of magnitude ML
Reference to an origin 97645961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-21 02:33:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-11-21T02:29:33.05 3.0 undecidable manual P -0.04 0
IV.LNSS.HHZ. 2021-11-21T02:29:32.22 0.6 undecidable manual S 161 39.2274 50 -0.02 48
IV.GUMA.HHZ. 2021-11-21T02:29:32.63 0.6 undecidable manual S 69 39.0276 50 0.45 44
IV.PIEI.HHZ. 2021-11-21T02:29:32.11 3.0 negative manual P 0.09 0
IV.TERO.HHZ. 2021-11-21T02:29:31.03 3.0 undecidable manual P -0.29 0
IV.ATCC.EHZ. 2021-11-21T02:29:30.88 0.3 undecidable manual S 324 33.9438 50 0.05 73
IV.MOMA.HHZ. 2021-11-21T02:29:29.92 0.6 undecidable manual S 240 29.6481 50 0.23 47
IV.CSP1.EHZ. 2021-11-21T02:29:29.76 0.6 undecidable manual S 56 31.0467 50 -0.29 46
IV.SMA1.EHZ. 2021-11-21T02:29:28.68 3.0 negative manual P 0.34 0
IV.MC2.EHZ. 2021-11-21T02:29:28.30 0.6 undecidable manual S 97 24.753 112 0.02 50
IV.GAVE.EHZ. 2021-11-21T02:29:28.95 0.3 undecidable manual S 179 27.2505 50 -0.1 73
IV.EL6.EHZ. 2021-11-21T02:29:27.73 3.0 negative manual P -0.02 0
IV.NRCA.HHZ. 2021-11-21T02:29:27.19 0.6 undecidable manual S 122 21.867 114 -0.16 48
IV.CESX.HHZ. 2021-11-21T02:29:27.35 3.0 negative manual P -0.13 0
IV.MURB.HHZ. 2021-11-21T02:29:27.82 3.0 positive manual P 0 0
IV.ARRO.EHZ. 2021-11-21T02:29:27.12 3.0 undecidable manual P 0.15 0
IV.ASSB.HHZ. 2021-11-21T02:29:27.21 0.6 undecidable manual S 302 21.7671 114 -0.12 49
IV.FOSV.EHZ. 2021-11-21T02:29:26.96 3.0 undecidable manual P 0.12 0
IV.FDMO.HHZ. 2021-11-21T02:29:26.46 0.6 undecidable manual S 56 19.6692 116 -0.2 48
IV.MML1.EHZ. 2021-11-21T02:29:26.86 0.6 undecidable manual S 20 20.6682 115 -0.12 49
IV.LNSS.HHZ. 2021-11-21T02:29:26.35 1.0 undecidable manual P 161 39.2274 50 -0.31 23
IV.GUMA.HHZ. 2021-11-21T02:29:26.79 0.3 undecidable manual P 69 39.0276 50 0.17 70
IV.SNTG.HHZ. 2021-11-21T02:29:25.93 3.0 undecidable manual P 0.01 0
IV.MOMA.HHZ. 2021-11-21T02:29:25.19 0.6 positive manual P 240 29.6481 50 0 49
IV.CSP1.EHZ. 2021-11-21T02:29:25.23 0.1 undecidable manual P 56 31.0467 50 -0.16 95
IV.ATCC.EHZ. 2021-11-21T02:29:25.74 0.1 undecidable manual P 324 33.9438 50 -0.1 96
IV.MC2.EHZ. 2021-11-21T02:29:24.38 0.6 negative manual P 97 24.753 112 0.01 50
IT.MTCL.HGZ. 2021-11-21T02:29:24.29 0.6 undecidable manual S 56 11.0778 131 0.12 50
IV.GAVE.EHZ. 2021-11-21T02:29:24.85 0.1 positive manual P 179 27.2505 50 0.04 98
IV.MML1.EHZ. 2021-11-21T02:29:23.64 1.0 positive manual P 20 20.6682 115 0.02 25
IV.ASSB.HHZ. 2021-11-21T02:29:23.83 0.1 negative manual P 302 21.7671 114 0.01 100
IV.NRCA.HHZ. 2021-11-21T02:29:23.83 0.1 negative manual P 122 21.867 114 0 100
IV.FDMO.HHZ. 2021-11-21T02:29:23.46 0.1 positive manual P 56 19.6692 116 0.02 100
IT.MTCL.HGZ. 2021-11-21T02:29:22.24 0.1 undecidable manual P 56 11.0778 131 0.24 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IT.MTCL.HGE. ML:3.6 0.04505 0.04 AML other m 2021-11-21T02:29:24.41
IT.MTCL.HGN. ML:3.6 0.053950000000000005 0.14 AML other m 2021-11-21T02:29:24.60
IV.FDMO.HHN. ML:1.4 0.0001825 0.14 AML other m 2021-11-21T02:29:26.75
IV.FDMO.HHE. ML:1.4 0.0001825 1.44 AML other m 2021-11-21T02:29:26.12
IV.MML1.EHN. ML:1.6 0.000254 0.18 AML other m 2021-11-21T02:29:27.21
IV.MML1.HNN. ML:1.6 0.000262 0.2 AML other m 2021-11-21T02:29:27.21
IV.MML1.HNE. ML:1.7 0.0003345 0.14 AML other m 2021-11-21T02:29:27.14
IV.MML1.EHE. ML:1.7 0.00032799999999999995 0.16 AML other m 2021-11-21T02:29:27.22
IV.NRCA.HHN. ML:1.5 0.00020750000000000003 0.12 AML other m 2021-11-21T02:29:27.38
IV.ASSB.HHE. ML:1.3 0.000133 0.12 AML other m 2021-11-21T02:29:27.41
IV.ASSB.HHN. ML:1.1 0.0000859 0.16 AML other m 2021-11-21T02:29:27.99
IV.NRCA.HHE. ML:1.3 0.0001495 0.16 AML other m 2021-11-21T02:29:28.07
IV.GAVE.EHN. ML:1.7 0.0002935 0.6 AML other m 2021-11-21T02:29:29.41
IV.GAVE.EHE. ML:1.8 0.0003155 0.5 AML other m 2021-11-21T02:29:29.60
IV.CSP1.EHN. ML:1.8 0.00028700000000000004 0.52 AML other m 2021-11-21T02:29:30.05
IV.CSP1.EHE. ML:1.8 0.00028149999999999996 0.58 AML other m 2021-11-21T02:29:30.27
IV.MOMA.HHN. ML:1.2 0.00008585 0.18 AML other m 2021-11-21T02:29:30.64
IV.MOMA.HHE. ML:1.2 0.00008649999999999999 0.14 AML other m 2021-11-21T02:29:31.22
IV.ATCC.EHE. ML:1.3 0.00008735 0.16 AML other m 2021-11-21T02:29:31.14
IV.ATCC.EHN. ML:1.2 0.00007300000000000001 0.6 AML other m 2021-11-21T02:29:31.54
IV.SNTG.HHN. ML:1.0 0.00004385 0.28 AML other m 2021-11-21T02:29:31.79
IV.SNTG.HHE. ML:1.0 0.00004495 0.3 AML other m 2021-11-21T02:29:32.67
IV.GUMA.HHE. ML:1.8 0.000226 0.2 AML other m 2021-11-21T02:29:32.75
IV.LNSS.HHN. ML:1.4 0.0000812 0.3 AML other m 2021-11-21T02:29:32.95
IV.LNSS.HHE. ML:1.5 0.00011649999999999999 1.22 AML other m 2021-11-21T02:29:33.77
IV.FOSV.EHE. ML:0.9 0.00002465 1 AML other m 2021-11-21T02:29:33.68
IV.ARRO.EHN. ML:1.0 0.000028650000000000002 0.94 AML other m 2021-11-21T02:29:33.46
IV.FOSV.EHN. ML:0.9 0.0000233 0.8 AML other m 2021-11-21T02:29:33.27
IV.GUMA.HHN. ML:1.5 0.00011 0.42 AML other m 2021-11-21T02:29:34.17
IV.CESX.HHE. ML:0.8 0.0000214 0.46 AML other m 2021-11-21T02:29:34.18
IV.ARRO.EHE. ML:1.1 0.000037699999999999995 0.2 AML other m 2021-11-21T02:29:34.43
IV.CESX.HHN. ML:0.9 0.00002735 0.82 AML other m 2021-11-21T02:29:34.79
IV.EL6.EHE. ML:1.4 0.0000679 0.94 AML other m 2021-11-21T02:29:35.65
IV.MURB.HHE. ML:1.3 0.00006154999999999999 0.44 AML other m 2021-11-21T02:29:35.74
IV.EL6.EHN. ML:1.3 0.00005875 0.64 AML other m 2021-11-21T02:29:36.15
IV.MURB.HHN. ML:1.2 0.00004905 0.22 AML other m 2021-11-21T02:29:38.41
IV.SMA1.EHE. ML:0.9 0.00002195 0.56 AML other m 2021-11-21T02:29:41.75
IV.SMA1.EHN. ML:0.9 0.000019529999999999998 1.4 AML other m 2021-11-21T02:29:42.91
IV.PIEI.HHN. ML:0.8 0.000011504999999999999 0.76 AML other m 2021-11-21T02:29:43.44
IV.PIEI.HHE. ML:1.0 0.000016649999999999998 0.38 AML other m 2021-11-21T02:29:44.92
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download